Research on the Characteristics of Microscopic Damage to Different Pore Types by Slippery Water Fracturing Fluid in the Chang Member Tight Sandstone Reservoir, Ordos Basin, NW China

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Sample status</td><td class="align_center">Number of pores</td><td class="align_center">Total pore volume (<i>μ</i>m<sup>3</sup>)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">Saturated formation water</td><td class="align_center">77193</td><td class="align_center">594370</td></tr><tr><td class="align_left">9 h after fracturing fluid invasion</td><td class="align_center">117164</td><td class="align_center">427345</td></tr><tr><td class="align_left">24 h after fracturing fluid invasion</td><td class="align_center">117606</td><td class="align_center">410365</td></tr><tr><td class="align_left">72 h after fracturing fluid invasion</td><td class="align_center">116054</td><td class="align_center">405365</td></tr><tr><td class="align_left">24 h after formation water flooding</td><td class="align_center">110650</td><td class="align_center">468085</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Statistics of pore volume and number of pores in the core at different times.</div>

Geofluids

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Table 2

Table 2: Research on the Characteristics of Microscopic Damage to Different Pore Types by Slippery Water Fracturing Fluid in the Chang Member Tight Sandstone Reservoir, Ordos Basin, NW China 

Table 2 | Research on the Characteristics of Microscopic Damage to Different Pore Types by Slippery Water Fracturing Fluid in the Chang Member Tight Sandstone Reservoir, Ordos Basin, NW China 